// 成绩统计页面
<template>
  <div id="grade">
    <div ref="box" class="box"></div>
    <div class="notFound" v-if="isNull">
      <i class="iconfont icon-LC_icon_tips_fill"></i><span>该考生未参加考试</span>
    </div>
  </div>
</template>

<script>
  export default {
    name: "grade",
    data() {
      return {
        isNull: false, //原始数据
        tableDataX: [], //x轴数据 保存次数
        tableDataY: [], //y轴数据 保存分数
      }
    },
    mounted() {
      this.score();
    },
    methods: {
      score() {
        let studentId = this.$route.query.id
        this.$axios.get(`/score/getById`,{params:{
          studentId
          }}).then(res => { //根据学生Id查询成绩
          console.log(res)
          if(res.data.code == 200) {
            let rootData = res.data.data
            rootData.forEach((element,index) => {
              this.tableDataX.push(`第${index + 1}次`)
              this.tableDataY.push(element.etScore)
            });
            let boxDom = this.$refs["box"];
            let scoreCharts = this.$echarts.init(boxDom);
            let option = {
              xAxis: {
                type: "category",
                data: this.tableDataX
              },
              yAxis: {
                type: "value"
              },
              series: [
                {
                  data: this.tableDataY,
                  type: "line",
                  itemStyle: { normal: { label: { show: true } } }
                }
              ]
            };
            scoreCharts.setOption(option);
            scoreCharts.on("mouseover", params => {
              console.log(params.value);
            });
          }else {
            this.isNull = true
          }
        })
      }
    }
  };
</script>

<style lang="less" scoped>
  #grade {
    position: relative;
    .box{
      width: 600px;
      height: 400px;
    }
    .notFound {
      position: absolute;
      top: 0px;
      left: 0px;
    }
  }
</style>
